Thread: AP this question is beating my head off!

Hope I am posting the question in a correct thread heading;
well this is question of Arithmetic Progression.....I am stuck at this one and am not able to continue with rest....Plz help anyone.

Given is: The Sum of p terms of an AP is q ; and sum q terms of the same AP is p. Prove that sum p+q terms of the AP is equal to -(p+q)

Hello,

Are the terms consecutive ?

Not true even if they are consecutive...What if p=q?

Consider -1,1,3,5,7,9,... and p=q=3...

I guess we also need p not equal to q.